Methyl 5-chloro-4-fluoro-3-(trifluoromethoxy)pyridine-2-acetate
Methyl 2-chloro-3-fluoro-6-(trifluoromethoxy)pyridine-4-acetate
Methyl 2-chloro-3-fluoro-5-(trifluoromethoxy)pyridine-4-acetate
Methyl 3-chloro-4-fluoro-2-(trifluoromethoxy)pyridine-5-acetate